#define _CRT_SECURE_NO_WARNINGS  1
#include<stdio.h>
struct p
{
	char s;
	char s1;
	int n;
};
struct p1
{
	char s;
	char arr[];
};
struct p2
{
	char s;
	char s1;
	int n;
	struct p2* a1 ;
};
int main()
{
	printf("%d\n%d\n%d", sizeof(struct p), sizeof(struct p1), sizeof(struct p2));
	return 0;
}